DRAINAGE SYSTEM

Abstract

The invention refers to a drainage system (100), in particular a roof drainage system, comprising an outlet member (10) and a flow restrictor (20), whereby the flow restrictor (20) is situated above the outlet member (10). The flow restrictor (20) comprises a contact portion (22) and the outlet member (10) comprises a flange portion (12), whereby a first sealing member (30) is arranged on and/or along the flange portion (12) of the outlet member (10) and a second sealing member (40) is arranged at the contact portion (22) of the flow restrictor (20).

Claims

1. Drainage system (100) comprising an outlet member (10) and a flow restrictor (20), the flow restrictor (20) is situated above the outlet member (10), the flow restrictor (20) comprises a contact portion (22) and the outlet member (10) comprises a flange portion (12), a first sealing member (30) is arranged on and/or along the flange portion (12) of the outlet member (10) and a second sealing member (40) is arranged at the contact portion (22) of the flow restrictor (20), the first sealing member (30) and the second sealing member are arranged partially parallel to each other and spatially separated from each other such that a drainage between the first and the second sealing members (30; 40) into the outlet member (10) is provided.

2. Drainage system (100) according to claim 1, the second sealing member (40) extends in horizontal direction and at its horizontal ends (42) extends in vertical direction to form a water storage.

3. Drainage system (100) according to claim 2, the second sealing member (40) extends in vertical direction at its horizontal ends (42) such that a predeterminable height of the water storage is provided.

4. Drainage system (100) according to claim 1, the second sealing member (40) is arranged on, along or below the contact portion (22) of the flow restrictor member (20).

5. Drainage system (100) according to claim 1, the second sealing member (40) is fixed to the contact portion (22) of the flow restrictor (20).

6. Drainage system (100) according to claim 1, the contact portion (22) of the flow restrictor (20) is provided as a connection area for the second sealing member (40).

7. Drainage system (100) according to claim 1, a drainage member (70) is arranged between the first and the second sealing members (30; 40) to provide a water drainage along the outside of the second sealing member (40) to the outlet member (10).

8. Drainage System (100) according to claim 7, the drainage member (70) is arranged such that water from a water storage member exceeding the maximum height of a vertically extending part of the second sealing member (40) can be drained to the outlet member (10).

9. Drainage System (100) according to claim 1, the first sealing member (30) comprises at least a first liner (30), the second sealing member (40) comprises at least a second liner (44), the second liner (44) in combination with a geotextile (46).

10. Drainage System (100) according to claim 1, the flow restrictor (20) comprises a chimney overflow member (24) for drainage of water extending at least in vertical direction.

11. Drainage System (100) according to claim 1, the system (100) further comprises at least a first raising ring (60), the first raising ring (60) is arranged to the flow restrictor (20) and situated above the contact portion (22) of the flow restrictor (20).

12. Drainage system (100) according to claim 1, the drainage system (100) further comprises at least a second raising ring (80), the second raising ring (80) is arranged to the flow restrictor (20) and situated below the contact portion (22) of the flow restrictor (20).

Description

[0034] Further details of the invention are outlined in the following with reference to the enclosed figures.

[0035] It is shown:

[0036] FIG. 1 an exploded illustration of a part of a drainage system;

[0037] FIG. 2 a cross-sectional view of the system; and

[0038] FIG. 3 a perspective view of the embodiment of the system according to FIG. 1.

[0039] In FIG. 1 an exploded illustration of a part of a drainage system 100 is shown. FIG. 3 further illustrates a perspective view of the embodiment of the system according to FIG. 1.

[0040] The system 100 comprises an outlet member 10, a flow restrictor 20, a first sealing member 30, at least one first raising ring 60 and at least one second raising ring 80. In particular, the outlet member 10 and the flow restrictor 20 are coaxially aligned with each other.

[0041] Furthermore, the part of the system 100 is illustrated with a clamping ring 90 and a cover member 95.

[0042] The flow restrictor 20 comprises a contact portion 22 as well as a vertical chimney overflow member 24 for drainage of fluid. Thus, water can be drained through the flow restrictor 20 to the outlet member 10 as soon as the water level exceeds the height of the chimney overflow member 24.

[0043] The outlet member 10 is a funnel-shaped outlet member 10 in order to facilitate drainage of fluid. The outlet member 10 comprises a flange portion 12.

[0044] Inside the funnel-shaped outlet member 10 the clamping ring 90 can be arranged in combination with the second raising ring 80. In particular, the raising ring 80 is supported by the clamping ring, comprising a funnel-shaped outer circumference to fit into the funnel-shaped outlet member 10, at a lower side of the raising ring 80.

[0045] Above the second raising 80 the flow restrictor 20 is arranged, whereby the second raising ring 80 supports the contact portion 22 of the flow restrictor 20. Thus, a vertical distance between the flange portion 12 of the outlet member 10 and the contact portion 22 of the flow restrictor 20 can be set by the second raising ring 80.

[0046] In FIG. 1, the contact portion 22 of the flow restrictor 20 is provided in the form of a flange portion.

[0047] Further, according to FIG. 1 the second sealing member 30 is situated below the contact portion 22 of the flow restrictor 20.

[0048] Above the flow restrictor 20, in particular on the contact portion 22 of the flow restrictor 20, at least one first raising ring 60 is arranged. According to FIG. 1 two first raising rings 60 are arranged on top of each other in order to provide an increased height for arrangement of the cover member 95.

[0049] According to FIG. 1 the two first raising rings 60 are arranged on and/or above and/or along the flow restrictor 20.

[0050] The second and/or the first raising rings 80; 60 can be provided with a flange portion or any other kind of portion in order to be fixable to the outlet member 10 and/or the clamping ring 90.

[0051] In FIG. 2 a cross-sectional view of the system 100 is shown.

[0052] In addition to FIG. 1 the system 100 is illustrated with the first sealing member 30 which is situated along the flange portion 12 of the outlet member 10 and reaches into the funnel-shaped outlet member 10.

[0053] The second sealing member 40 is situated below the flow restrictor 20, in particular below the contact portion 22 of the flow restrictor 20. The second sealing member 40 can be adhesively bonded to the flow restrictor 20 or can be clamped to the flow restrictor 20 by additional clamping member.

[0054] Alternatively, the second sealing member 40 can be arranged and fixed on top of the flow restrictor 20, in particular on top of the contact portion 22 of the flow restrictor 20.

[0055] According to FIG. 2, the first and second sealing member 30; 40 are vertically and spatially separated from each other for providing a drainage function between the first and second sealing member 30; 40 to the outlet member 10. In particular, a drainage member 70 is arranged between the first and second sealing member 30; 40.

[0056] Furthermore, the first and second sealing member 30; 40 can comprise several layers. According to FIG. 2 the second sealing member 40 can comprise a second liner and a second geotextile in order to provide an adequate sealing function. The first sealing member 30 can be provided as a first liner in order to seal any kind of insulation or the like being situated below and around the outlet member 10.

[0057] The second sealing member 40 further extends in horizontal direction from the flow restrictor 20 and comprises horizontal ends 42. At these horizontal outer end sides 42, the second sealing member 40 further extends in vertical direction such that a water storage can be formed by the second sealing member 40.

[0058] Additionally, within the additional water storage being particularily formed by the second sealing member 40, a water storage member 50 can be provided in order to provide suitable stability of above arranged layers like any kind of planting.

[0059] The height of the planting layer or the like being arranged above can be defined by arrangement of one or multiple first raising rings 60. According to FIG. 2 to raising rings 60 are provided such that a planting layer with a certain height can be provided on top of the long term water storage comprising a structural strengthening water storage member 50.

[0060] In summary, by providing the flow restrictor 20 with a chimney-like outlet/chimney overflow member 24 in combination with the second sealing member 40 comprising vertically extending end sides 42, a long term water storage is achievable.

[0061] In case the water level within the water storage exceeds a predetermined height, water can be discharged via the chimney overflow member/chimney-like outlet 24 of the flow restrictor 20. Further, water can also be discharged by exceeding the vertical height of the end sides 42 of the second sealing member 40. In this case, the water can be discharged through the discharge member 70 being situated between the first and second sealing member 30; 40 to the outlet member 10.

[0062] In summary the present invention provides a securely sealed option for providing a long term water storage or reservoir, whereby the second sealing member for providing a water reservoir is independent from the first sealing member. Thus, the first sealing member does not suffer from long term hydraulic pressure and can provide a secure seal of e.g. a rooftop structure.

[0063] Additionally, the present invention is cost efficient and easy to assemble on site, e.g. on a rooftop. Advantageously, the drainage member 70 in between the first and second sealing member 30; 40 provides an additional drainage function in case of e.g. heavy rainfalls or the like leading to an exceeding water level in the water storage or in case of a blockage of the flow restrictor 20. In this case, water can flow over the vertically extending side ends 42 of the second sealing member 40 and can be discharged through the drainage member 70.

LIST OF REFERENCE SIGNS

[0064] 10 Outlet member [0065] 12 Flange portion [0066] 20 Flow restrictor [0067] 22 Contact portion [0068] 24 Chimney overflow member/chimney-like outlet [0069] 30 First sealing member [0070] 40 Second sealing member [0071] 42 Horizontal ends [0072] 44 Second liner [0073] 46 Second geotextile [0074] 50 Water storage member [0075] 60 First raising ring [0076] 70 Drainage member [0077] 80 Second raising ring [0078] 90 Clamping ring [0079] 95 Cover member [0080] 100 Roof drainage system